A jsonp renderer for pyramid

pyramid_jsonp_renderer.py

## from http://pastie.org/1695550

def JsonPRendererFactory(info):
    """A special renderer which returns JSONP data.

    Be careful to only return data that can be dumped to JSON. In particular
    unicode strings may not work.
    """
    def render(value, system):
        request=system.get("request")
        callback=request.params["callback"]
        request.response_content_type="application/json"
        return "%s(%s)" % (callback, json.dumps(value))

    return render